Intraocular Lens Injector Guide Slope Mechanism
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Solution Overview
Problem
Conventional intraocular lens injectors face challenges in smoothly placing the tip end of the support portion on the surface of the optical portion when folding the lens, often resulting in the support portion getting caught on the edge of the optical portion.
Innovation Solution
The intraocular lens injector features a guide slope mechanism on the lens setting portion and a rod portion that moves along this slope to ensure the tip end of the support portion is securely placed on the optical portion, using a guide slope and grooves to stabilize the movement and prevent lateral shaking, allowing for proper alignment and bending of the support portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional pushing member is used to push out the intraocular lens, then the lens can be ejected from the injector, but the tip end part of the support portion gets caught on the edge of the optical portion and cannot be placed smoothly
Solution Approach 1:
The guide slope is formed on the lens setting portion before the pushing member operates. This preliminary structural arrangement ensures that when the pushing member moves forward, the tip end part of the support portion is already positioned to ride smoothly along the guide slope onto the optical portion, preventing catching on the edge and ensuring reliable folding
Solution Approach 2:
The guide slope acts as an intermediary element between the pushing member and the intraocular lens. It mediates the interaction by providing a controlled path for the support portion tip end to follow during ejection, transforming the direct pushing action into a guided folding motion that prevents the support portion from catching on the optical portion edge
Data Source
AI summary
There is provided an intraocular lens injector configured to inject an intraocular lens having an optical portion 8 and a pair of support portions 9a, 9b, including: an injector main body 2 having a lens setting portion 6 on which the intraocular lens 7 is set; a pushing member 5 that pushes out the intraocular lens 7 from the lens setting portion 6 by moving in a direction of a central axis of the injector main body 2; and a guide slope 11 that guides the movement of the pushing member 5 when the pushing member 5 moves in the direction of the central axis of the injector main body 2, wherein when the pushing member 5 moves in the direction of the central axis of the injector main body 2, a tip end part of the pushing member 5 comes into contact with the support portions 9b of the intraocular lens 7, and comes into contact with the optical portion 8 while pushing the support portions 9b, and the guide slope 11 guides the movement of the pushing member 5 so that the tip end part of the pushing member 5 is displaced in a vertical direction.